Hc05 disconnecting and not entering AT mode

[cattledog]

You are having a similar experience to the poster in this thread.

Yes it connected... wait. No it didn't

Hello! I am using the HM10 bluetooth module with my Arduino Uno Rev 3. I did the circuit, and my sensor is connecting to my PC fine... for around 5 seconds. Then it just says disconnected. [image] I don't really have a sketch. My module is really close to my PC, but it still isn't working for me. Do you know how to fix this? (I have a Windows) Thanks, panda30

See the information in Post #13 and following about the setting up of the Com Port and the use of a terminal program.